"Had it too easy?" Frederik van Zyl Slabbert’s resignation as leader of the official parliamentary opposition, 7 February 1986. Historia, [S. l.], v. 60, n. 2, 2021. Disponível em: https://upjournals.up.ac.za/index.php/historia/article/view/1315.. Acesso em: 18 may. 2024.